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+/****************************************************************************
+ * *
+ * GNAT COMPILER COMPONENTS *
+ * *
+ * GNAT-SPECIFIC GCC TREE CODES *
+ * *
+ * Specification *
+ * *
+ * Copyright (C) 1992-2004, 2007 Free Software Foundation, Inc. *
+ * *
+ * GNAT is free software; you can redistribute it and/or modify it under *
+ * terms of the GNU General Public License as published by the Free Soft- *
+ * ware Foundation; either version 3, or (at your option) any later ver- *
+ * sion. GNAT is distributed in the hope that it will be useful, but WITH- *
+ * OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY *
+ * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License *
+ * for more details. You should have received a copy of the GNU General *
+ * Public License along with GCC; see the file COPYING3. If not see *
+ * <http://www.gnu.org/licenses/>. *
+ * *
+ * GNAT was originally developed by the GNAT team at New York University. *
+ * Extensive contributions were provided by Ada Core Technologies Inc. *
+ * *
+ ****************************************************************************/
+
+/* A type that is an unconstrained array itself. This node is never passed
+ to GCC. TREE_TYPE is the type of the fat pointer and TYPE_OBJECT_RECORD_TYPE
+ is the type of a record containing the template and data. */
+
+DEFTREECODE (UNCONSTRAINED_ARRAY_TYPE, "unconstrained_array_type", tcc_type, 0)
+
+/* A reference to an unconstrained array. This node only exists as an
+ intermediate node during the translation of a GNAT tree to a GCC tree;
+ it is never passed to GCC. The only field used is operand 0, which
+ is the fat pointer object. */
+
+DEFTREECODE (UNCONSTRAINED_ARRAY_REF, "unconstrained_array_ref",
+ tcc_reference, 1)
+
+/* An expression that returns an RTL suitable for its type. Operand 0
+ is an expression to be evaluated for side effects only. */
+DEFTREECODE (NULL_EXPR, "null_expr", tcc_expression, 1)
+
+/* Same as ADDR_EXPR, except that if the operand represents a bit field,
+ return the address of the byte containing the bit. This is used
+ for the 'Address attribute and never shows up in the tree. */
+DEFTREECODE (ATTR_ADDR_EXPR, "attr_addr_expr", tcc_reference, 1)
+
+/* Here are the tree codes for the statement types known to Ada. These
+ must be at the end of this file to allow IS_ADA_STMT to work. */
+
+/* This is how record_code_position and insert_code_for work. The former
+ makes this tree node, whose operand is a statement. The latter inserts
+ the actual statements into this node. Gimplification consists of
+ just returning the inner statement. */
+DEFTREECODE (STMT_STMT, "stmt_stmt", tcc_statement, 1)
+
+/* A loop. LOOP_STMT_TOP_COND and LOOP_STMT_BOT_COND are the tests to exit a
+ loop at the top and bottom, respectively. LOOP_STMT_UPDATE is the statement
+ to update the loop iterator at the continue point. LOOP_STMT_BODY are the
+ statements in the body of the loop. LOOP_STMT_LABEL points to the LABEL_DECL
+ of the end label of the loop. */
+DEFTREECODE (LOOP_STMT, "loop_stmt", tcc_statement, 5)
+
+/* Conditionally exit a loop. EXIT_STMT_COND is the condition, which, if
+ true, will cause the loop to be exited. If no condition is specified,
+ the loop is unconditionally exited. EXIT_STMT_LABEL is the end label
+ corresponding to the loop to exit. */
+DEFTREECODE (EXIT_STMT, "exit_stmt", tcc_statement, 2)
+
+/* A exception region. REGION_STMT_BODY is the statement to be executed
+ inside the region. REGION_STMT_HANDLE is a statement that represents
+ the exception handlers (usually a BLOCK_STMT of HANDLE_STMTs).
+ REGION_STMT_BLOCK is the BLOCK node for the declarative region, if any. */
+DEFTREECODE (REGION_STMT, "region_stmt", tcc_statement, 3)
+
+/* An exception handler. HANDLER_STMT_ARG is the value to pass to
+ expand_start_catch, HANDLER_STMT_LIST is the list of statements for the
+ handler itself, and HANDLER_STMT_BLOCK is the BLOCK node for this
+ binding. */
+DEFTREECODE (HANDLER_STMT, "handler_stmt", tcc_statement, 3)